Comment 1 for bug 1352157

Hit this issue during upgrading from 1.05 to 1.10, we used python-redis_2.4.9-1ubuntu1_all.deb in R1.05-211 build, and during upgrade pyhon-redis was not upgraded as the new 1.10 contrail-analytics requires python-redis (>= 2.4.9) and the requirement was satisfied. But opserver failed to come up.